Heavenly Father, have mercy on me according to Your unfailing love. Wash me clean from my sins and purify my heart. Create in me a clean heart, O God, and renew a steadfast spirit within me. Do not cast me away from Your presence, and do not take Your Holy Spirit from me. Restore to me the joy of Your salvation and uphold me with a willing spirit. Teach me to walk in Your truth, to love righteousness, and to turn away from sin. Let my heart be pure, my spirit humble, and my life a reflection of Your grace.